package com.liang.springcloud.controller;

import com.liang.springcloud.pojo.Dept;
import com.liang.springcloud.service.DeptService;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;

//提供restful服务
@RestController
public class DeptController {

    //获取一些配置信息，得到具体的微服务！
    @Autowired
    private DiscoveryClient client;

    @Autowired
    private DeptService deptService;

    @GetMapping("/dept/get/{id}")
    @HystrixCommand(fallbackMethod = "hystrixGet")//只要失败就调用其他方法
    public Dept get(@PathVariable("id") Long id){
        Dept dept = deptService.queryById(id);
        if (dept == null){
            throw  new RuntimeException("id=>"+id+"不存在这个id");
        }
        return  dept;
    }

    //备选方法
    public Dept hystrixGet(@PathVariable("id") Long id){
        return  new Dept()
                .setDeptno(id)
                .setDname("id=>"+id+"没有对应信息，null==@hystrix")
                .setDb_source("no this database in mysql");
    }

}
